VersionChecker.php
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VersionChecker.php
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	<?php
	/**
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	*/

	namespace MediaWiki\Composer;

	use Composer\Composer;
	use RuntimeException;

	/**
	* Checks the version of Composer that this is being run on, and aborts if not version 2 or later
	*
	* @internal
	* @since 1.42
	*/
	class VersionChecker {
	public static function onEvent() {
	$version = Composer::VERSION;
	if ( $version === '@package_version@' ) {
	// In Composer 1.9+, unreleased git branches have this value in Composer::VERSION,
	// and Composer::getVersion() was introduced to work around this.
	$version = Composer::getVersion();
	}
	if ( version_compare( $version, '2.0.0', '<' ) ) {
	throw new RuntimeException(
	"MediaWiki requires Composer version 2 or later; version 1"
	. " has been considered end of life since October 2020!"
	);
	}
	}
	}